... A213, A333, DIN1629, DIN17175, Russian standard, Franch stan.)2. stainless steel pipe (304, 316, 316L, 304L, 321, 410, 444, 430)3 ... . alloy steel pipe (ASTM A519 GR. 4130, 4140)4. anti-corrosion steel pipe (cement lined and coated, 3PE, ... ↓---ISO 9001↓-Equipment and Detector-Application-Other Leading steel pipe---stainless steel pipe↓---Anti-corrosion steel pipe↓ A53/A106/API 5L GR.B ...